The West Antarctic ice sheet could raise sea levels by 3 metres if it melts away Mario Tama/Getty Images
Shading Earth’s surface from sunlight could postpone or even avoid the collapse of the West Antarctic ice sheet – but only if we start soon and only in conjunction with substantial emissions cuts, according to two computer modelling studies by independent teams.
“There’s a time window that we can do this, and if we dither, there’s just no point in doing it,” says at the University of Lapland in Finland, who led one of the teams. “And that…
